import 'dart:async';
import 'dart:io';

import 'package:beauty_cam/beauty_cam.dart';
import 'package:beauty_cam/camera_view.dart';
import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';

void main() {
  runApp(const MaterialApp(
    title: 'CameraApp',
    home: CameraApp(),
  ));
}

class CameraApp extends StatefulWidget {
  const CameraApp({Key? key}) : super(key: key);

  @override
  State<CameraApp> createState() => _CameraAppState();
}

class _CameraAppState extends State<CameraApp> {
  ///定义一个测试类的属性 用来调用原生方法 和原生交互
  BeautyCam? cameraFlutterPluginDemo; // 定一个插件的对象，
  List<String> filters = [
    "",
    "@dynamic motionflow 12 0",
    "@dynamic soulstuff 240 320",
    "@adjust brightness -0.55 ",
    "@curve RGB(0,255)(255,0) @style cm mapping0.jpg 80 80 8 3", // ASCII art (字符画效果)
    "@style waveform 0.01 0.01 0.4 0.4",
    "@beautify face 1 480 640", //Beautify
    "@adjust lut edgy_amber.png",
    "@adjust lut filmstock.png",
    "@adjust lut foggy_night.png",
    "@adjust lut late_sunset.png",
    "@adjust lut soft_warming.png",
    "@adjust lut wildbird.png",
    "#unpack @blur lerp 0.75", //can adjust blur intensity
    "@blur lerp 1", //can adjust blur mix
    "#unpack @dynamic wave 1", //can adjust speed
    "@dynamic wave 0.5", //can adjust wave mix
    "#unpack @style sketch 0.9",
    "#unpack @krblend sr hehe.jpg 100 ",
    "#unpack @krblend ol hehe.jpg 100",
    "#unpack @krblend add hehe.jpg 100",
    "#unpack @krblend darken hehe.jpg 100",
    "@beautify bilateral 100 3.5 2 ",
    "@style crosshatch 0.01 0.003 ",
    "@style edge 1 2 ",
    "@style edge 1 2 @curve RGB(0, 255)(255, 0) ",
    "@style edge 1 2 @curve RGB(0, 255)(255, 0) @adjust saturation 0 @adjust level 0.33 0.71 0.93 ",
    "@adjust level 0.31 0.54 0.13 ",
    "#unpack @style emboss 1 2 2 ",
    "@style halftone 1.2 ",
    "@vigblend overlay 255 0 0 255 100 0.12 0.54 0.5 0.5 3 ",
    "@curve R(0, 0)(63, 101)(200, 84)(255, 255)G(0, 0)(86, 49)(180, 183)(255, 255)B(0, 0)(19, 17)(66, 41)(97, 92)(137, 156)(194, 211)(255, 255)RGB(0, 0)(82, 36)(160, 183)(255, 255) ",
    "@adjust exposure 0.98 ",
    "@adjust shadowhighlight -200 200 ",
    "@adjust sharpen 10 1.5 ",
    "@adjust colorbalance 0.99 0.52 -0.31 ",
    "@adjust level 0.66 0.23 0.44 ",
    "@style min",
    "@style max",
    "@style haze 0.5 -0.14 1 0.8 1 ",
    "@curve R(0, 0)(71, 74)(164, 165)(255, 255) @pixblend screen 0.94118 0.29 0.29 1 20", //415
    "@curve G(0, 0)(144, 166)(255, 255) @pixblend screen 0.94118 0.29 0.29 1 20", //416
    "@curve B(0, 0)(68, 72)(149, 184)(255, 255) @pixblend screen 0.94118 0.29 0.29 1 20", //417
    "@curve R(0, 0)(71, 74)(164, 165)(255, 255) @pixblend overlay 0.357 0.863 0.882 1 40", //418
    "@curve R(0, 0)(96, 61)(154, 177)(255, 255) @pixblend overlay 0.357 0.863 0.882 1 40", //419
    "@curve R(0, 0)(152, 183)(255, 255)G(0, 0)(161, 133)(255, 255) @pixblend overlay 0.357 0.863 0.882 1 40", //420
    "@curve R(0, 0)(149, 145)(255, 255)G(0, 0)(149, 145)(255, 255)B(0, 0)(149, 145)(255, 255) @pixblend colordodge 0.937 0.482 0.835 1 20", //421
    "@curve G(0, 0)(101, 127)(255, 255) @pixblend colordodge 0.937 0.482 0.835 1 20", //422
    "@curve B(0, 0)(70, 87)(140, 191)(255, 255) @pixblend pinlight 0.247 0.49 0.894 1 20", //423
    "@adjust saturation 0.7 @pixblend screen 0.8112 0.243 1 1 40", //425
    "@adjust saturation 0.7 @pixblend screen 1 0.243 0.69 1 30", //426

    "@curve R(0, 0)(71, 74)(164, 165)(255, 255) @pixblend screen 0.94118 0.29 0.29 1 20", //415
    "@curve G(0, 0)(144, 166)(255, 255) @pixblend screen 0.94118 0.29 0.29 1 20", //416
    "@curve B(0, 0)(68, 72)(149, 184)(255, 255) @pixblend screen 0.94118 0.29 0.29 1 20", //417
    "@curve R(0, 0)(71, 74)(164, 165)(255, 255) @pixblend overlay 0.357 0.863 0.882 1 40", //418
    "@curve R(0, 0)(96, 61)(154, 177)(255, 255) @pixblend overlay 0.357 0.863 0.882 1 40", //419
    "@curve R(0, 0)(152, 183)(255, 255)G(0, 0)(161, 133)(255, 255) @pixblend overlay 0.357 0.863 0.882 1 40", //420
    "@curve R(0, 0)(149, 145)(255, 255)G(0, 0)(149, 145)(255, 255)B(0, 0)(149, 145)(255, 255) @pixblend colordodge 0.937 0.482 0.835 1 20", //421
    "@curve G(0, 0)(101, 127)(255, 255) @pixblend colordodge 0.937 0.482 0.835 1 20", //422
    "@curve B(0, 0)(70, 87)(140, 191)(255, 255) @pixblend pinlight 0.247 0.49 0.894 1 20", //423
    "@adjust saturation 0.7 @pixblend screen 0.8112 0.243 1 1 40", //425
    "@adjust saturation 0.7 @pixblend screen 1 0.243 0.69 1 30", //426

    "@curve R(0, 0)(117, 95)(155, 171)(179, 225)(255, 255)G(0, 0)(94, 66)(155, 176)(255, 255)B(0, 0)(48, 59)(141, 130)(255, 224)", //5
    "@curve R(0, 0)(69, 63)(105, 138)(151, 222)(255, 255)G(0, 0)(67, 51)(135, 191)(255, 255)B(0, 0)(86, 76)(150, 212)(255, 255)", //6
    "@curve R(0, 0)(43, 77)(56, 104)(100, 166)(255, 255)G(0, 0)(35, 53)(255, 255)B(0, 0)(110, 123)(255, 212)", //7
    "@curve R(0, 0)(35, 71)(153, 197)(255, 255)G(0, 15)(16, 36)(109, 132)(255, 255)B(0, 23)(181, 194)(255, 230)", //8
    "@curve R(15, 0)(92, 133)(255, 234)G(0, 20)(105, 128)(255, 255)B(0, 0)(120, 132)(255, 214)", //9
    "@curve R(0, 4)(255, 244)G(0, 0)(255, 255)B(0, 84)(255, 194)", //10
    "@curve R(48, 56)(82, 129)(130, 206)(214, 255)G(7, 37)(64, 111)(140, 190)(232, 220)B(2, 97)(114, 153)(229, 172)", //11
    "@curve R(39, 0)(93, 61)(130, 136)(162, 193)(208, 255)G(41, 0)(92, 61)(128, 133)(164, 197)(200, 250)B(0, 23)(125, 127)(255, 230)", //12
    "@curve R(40, 162)(108, 186)(142, 208)(193, 227)(239, 249)G(13, 7)(72, 87)(124, 150)(197, 206)(255, 255)B(8, 22)(57, 97)(112, 147)(184, 204)(255, 222)", //13
    "@curve R(18, 0)(67, 63)(104, 152)(128, 255)G(23, 4)(87, 106)(132, 251)B(17, 0)(67, 63)(108, 174)(128, 251)", //14
    "@curve R(5, 49)(85, 173)(184, 249)G(23, 35)(65, 76)(129, 145)(255, 199)B(74, 69)(158, 107)(255, 126)", //15
    "@adjust hsv -0.7 -0.7 0.5 -0.7 -0.7 0.5 @pixblend ol 0.243 0.07059 0.59215 1 25", //17
    "@adjust hsv -0.7 0.5 -0.7 -0.7 -0.7 0.5 @pixblend ol 0.07059 0.60391 0.57254 1 25", //18
    "@adjust hsv -0.7 0.5 -0.7 -0.7 0 0 @pixblend ol 0.2941 0.55292 0.06665 1 25", //19
    "@adjust hsv -0.8 0 -0.8 -0.8 0.5 -0.8 @pixblend ol 0.78036 0.70978 0.09018 1 28", //20

    "@adjust hsv -0.4 -0.64 -1.0 -0.4 -0.88 -0.88 @curve R(0, 0)(119, 160)(255, 255)G(0, 0)(83, 65)(163, 170)(255, 255)B(0, 0)(147, 131)(255, 255)", //22
    "@adjust hsv -0.5 -0.5 -0.5 -0.5 -0.5 -0.5 @curve R(0, 0)(129, 148)(255, 255)G(0, 0)(92, 77)(175, 189)(255, 255)B(0, 0)(163, 144)(255, 255)", //23
    "@adjust hsv 0.3 -0.5 -0.3 0 0.35 -0.2 @curve R(0, 0)(111, 163)(255, 255)G(0, 0)(72, 56)(155, 190)(255, 255)B(0, 0)(103, 70)(212, 244)(255, 255)", //24
    "@curve R(40, 40)(86, 148)(255, 255)G(0, 28)(67, 140)(142, 214)(255, 255)B(0, 100)(103, 176)(195, 174)(255, 255) @adjust hsv 0.32 0 -0.5 -0.2 0 -0.4", //25
    "@curve R(4, 35)(65, 82)(117, 148)(153, 208)(206, 255)G(13, 5)(74, 78)(109, 144)(156, 201)(250, 250)B(6, 37)(93, 104)(163, 184)(238, 222)(255, 237) @adjust hsv -0.2 -0.2 -0.44 -0.2 -0.2 -0.2", //26
    "@adjust hsv -1 -1 -1 -1 -1 -1", //27
    "@colormul mat 0.34 0.48 0.22 0.34 0.48 0.22 0.34 0.48 0.22 @curve R(0, 29)(20, 48)(83, 103)(164, 166)(255, 239)G(0, 30)(30, 61)(66, 94)(151, 160)(255, 241)B(2, 48)(82, 93)(166, 143)(255, 199)", //119
    "@colormul mat 0.34 0.48 0.22 0.34 0.48 0.22 0.34 0.48 0.22 @curve R(0, 0)(9, 10)(47, 38)(87, 69)(114, 92)(134, 116)(175, 167)(218, 218)(255, 255)G(40, 0)(45, 14)(58, 34)(74, 55)(125, 118)(192, 205)(255, 255)B(0, 0)(15, 16)(37, 31)(71, 55)(108, 88)(159, 151)(204, 201)(255, 255)", //120
    "@curve R(3, 0)(23, 29)(83, 116)(167, 206)(255, 255)G(5, 0)(56, 64)(160, 189)(255, 255)B(3, 0)(48, 49)(142, 167)(248, 255)", //160
    "@curve R(15, 0)(45, 37)(92, 103)(230, 255)G(19, 0)(34, 22)(138, 158)(228, 252)B(19, 0)(74, 63)(159, 166)(230, 255)", //161
    "@curve R(0, 4)(39, 103)(134, 223)(242, 255)G(0, 3)(31, 85)(68, 155)(131, 255)(219, 255)B(0, 3)(42, 110)(114, 207)(255, 255)", //162
    "@curve R(17, 0)(37, 18)(75, 52)(238, 255)G(16, 0)(53, 32)(113, 92)(236, 255)B(16, 0)(80, 57)(171, 164)(235, 255)", //163
    "@curve R(33, 0)(70, 32)(146, 143)(185, 204)(255, 255)G(22, 0)(103, 71)(189, 219)(255, 252)B(10, 0)(54, 29)(93, 66)(205, 220)(255, 255)", //164
    "@curve R(4, 4)(38, 38)(146, 146)(201, 202)(255, 255)G(0, 0)(80, 74)(192, 187)(255, 255)B(0, 0)(58, 58)(183, 184)(255, 255)", //165
    "@curve R(5, 8)(36, 51)(115, 145)(201, 220)(255, 255)G(6, 9)(67, 83)(169, 190)(255, 255)B(3, 3)(55, 60)(177, 190)(255, 255)", //166
    "@curve R(14, 0)(51, 42)(135, 138)(191, 202)(234, 255)G(11, 6)(78, 77)(178, 185)(242, 250)B(11, 0)(22, 10)(72, 60)(171, 162)(217, 209)(255, 255)", //167
    "@curve R(9, 0)(26, 7)(155, 108)(194, 159)(255, 253)G(9, 0)(50, 19)(218, 194)(255, 255)B(0, 0)(29, 9)(162, 116)(218, 194)(255, 255)", //168
    "@curve R(0, 0)(69, 93)(126, 160)(210, 232)(255, 255)G(0, 0)(36, 47)(135, 169)(250, 254)B(0, 0)(28, 30)(107, 137)(147, 206)(255, 255)", //169
    "@curve R(2, 2)(16, 30)(72, 112)(135, 185)(252, 255)G(2, 1)(30, 42)(55, 84)(157, 207)(238, 249)B(1, 0)(26, 17)(67, 106)(114, 165)(231, 250)", //170
    "@curve R(16, 0)(60, 45)(124, 124)(214, 255)G(18, 2)(91, 81)(156, 169)(213, 255)B(16, 0)(85, 74)(158, 171)(211, 255) @curve R(17, 0)(144, 150)(214, 255)G(16, 0)(61, 47)(160, 172)(215, 255)B(21, 2)(131, 135)(213, 255)", //171
    "@curve R(0, 0)(120, 96)(165, 255)G(90, 0)(131, 145)(172, 255)B(77, 0)(165, 167)(255, 255)", //172
    "@curve R(9, 0)(49, 62)(124, 155)(218, 255)G(10, 0)(30, 33)(137, 169)(223, 255)B(10, 0)(37, 45)(96, 122)(150, 182)(221, 255)", //173
    "@curve R(81, 3)(161, 129)(232, 253)G(91, 0)(164, 136)(255, 225)B(76, 0)(196, 162)(255, 225)", //174
    "@curve R(0, 0)(135, 147)(255, 255)G(0, 0)(135, 147)(255, 255)B(0, 0)(135, 147)(255, 255)  @adjust saturation 0.71 @adjust brightness -0.05 @curve R(19, 0)(45, 36)(88, 90)(130, 125)(200, 170)(255, 255)G(18, 0)(39, 26)(71, 74)(147, 160)(255, 255)B(0, 0)(77, 58)(136, 132)(255, 204)", //300
    "@adjust saturation 0 @curve R(9, 13)(37, 13)(63, 23)(81, 43)(91, 58)(103, 103)(159, 239)(252, 242)G(3, 20)(29, 20)(56, 19)(77, 37)(107, 108)(126, 184)(137, 217)(150, 248)(182, 284)(255, 255)B(45, 17)(78, 51)(96, 103)(131, 202)(255, 255)", //301
    "@curve R(42, 2)(53, 52)(80, 102)(100, 123)(189, 196)(255, 255)G(55, 74)(75, 98)(95, 114)(177, 197)(203, 212)(221, 220)(229, 234)(240, 249)B(0, 132)(81, 188)(180, 251)", //303
    "@adjust saturation 0 @curve R(0, 68)(10, 72)(42, 135)(72, 177)(98, 201)(220, 255)G(0, 29)(12, 30)(57, 127)(119, 203)(212, 255)(254, 239)B(0, 36)(54, 118)(66, 141)(119, 197)(155, 215)(255, 254)", //304
    "@curve R(0, 64)(16, 13)(58, 128)(108, 109)(162, 223)(255, 255)G(0, 30)(22, 35)(42, 58)(56, 86)(70, 119)(130, 184)(189, 212)B(6, 36)(76, 157)(107, 192)(173, 229)(255, 255)", //306
    "@vigblend mix 10 10 30 255 91 0 1.0 0.5 0.5 3 @curve R(0, 31)(35, 75)(81, 139)(109, 174)(148, 207)(255, 255)G(0, 24)(59, 88)(105, 146)(130, 171)(145, 187)(180, 214)(255, 255)B(0, 96)(63, 130)(103, 157)(169, 194)(255, 255)",
    "@adjust saturation 0 @curve R(0, 49)(16, 44)(34, 56)(74, 120)(120, 185)(151, 223)(255, 255)G(0, 46)(34, 73)(85, 129)(111, 164)(138, 192)(170, 215)(255, 255)B(0, 77)(51, 101)(105, 143)(165, 182)(210, 213)(250, 229)",
    "@adjust saturation 0 @adjust level 0 0.83921 0.8772",
    "@adjust hsl 0.02 -0.31 -0.17 @curve R(0, 28)(23, 45)(117, 148)(135, 162)G(0, 8)(131, 152)(255, 255)B(0, 17)(58, 80)(132, 131)(127, 131)(255, 225)"
  ];
  List<String> images = [
    "filmstock.png",
    "edgy_amber.png",
    "foggy_night.png",
    "hehe.jpg",
    "late_sunset.png",
    "logo.png",
    "mapping0.jpg",
    "soft_warming.png",
    "wildbird.png",
  ];
  var isRecording = false;
  bool isTakeVideo = true;
  int recordingSeconds = 0;
  int maxRecordingSeconds = 300;
  Timer? _timer;
  bool isEnableBeauty = true;
  double level = 1;
  late CameraView cameraView;
  String filter = '';
  double p = 0.5;
  @override
  void initState() {
    super.initState();
    cameraView = CameraView(
      onCreated: onCameraViewCreated,
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        // appBar: AppBar(
        //   title: Text(filter.isNotEmpty ? filter : "滤镜Demo"),
        //   actions: [
        //     TextButton(
        //         onPressed: () {
        //           for (var element in images) {
        //             _saveImg(element);
        //           }
        //         },
        //         child: const Text(
        //           "下载所需资源",
        //           style: TextStyle(color: Colors.white),
        //         ))
        //   ],
        // ),
        body: Stack(
      alignment: Alignment.bottomCenter,
      children: <Widget>[
        cameraView,

        ///控制面板
        Positioned(
            top: 60,
            right: 20,
            child: Column(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                IconButton(
                  onPressed: () => showBeautyBottomSheet(),
                  icon: Icon(
                    isEnableBeauty ? Icons.face : Icons.face_retouching_off,
                    color: Colors.white,
                    size: 30,
                  ),
                ),
                IconButton(
                  onPressed: () {
                    cameraFlutterPluginDemo?.switchCamera();
                  },
                  icon: const Icon(
                    CupertinoIcons.switch_camera,
                    color: Colors.white,
                    size: 30,
                  ),
                ),
                IconButton(
                  onPressed: () {
                    _showFilterDialog(context);
                  },
                  icon: const Icon(
                    CupertinoIcons.list_bullet,
                    color: Colors.white,
                    size: 30,
                  ),
                ),
              ],
            )),

        ///录制⏺️
        Positioned(
          bottom: 50,
          left: 20,
          right: 20,
          child: GestureDetector(
            child: Icon(
              isRecording
                  ? CupertinoIcons.stop_fill
                  : CupertinoIcons.circle_fill,
              color: Colors.white,
              size: 80,
            ),
            onTap: () {
              isTakeVideo
                  ? isRecording
                      ? stopVideoRecording()
                      : startVideoRecording()
                  : takePhoto();
            },
          ),
        ),

        ///选择
        Positioned(
          bottom: 30,
          left: 20,
          right: 20,
          child: Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Container(
                width: isTakeVideo ? 50 : 0,
              ),
              GestureDetector(
                onTap: () {
                  setState(() {
                    isTakeVideo = true;
                  });
                },
                child: const Text(
                  "拍视频",
                  style: TextStyle(color: Colors.white, fontSize: 16),
                ),
              ),
              Container(
                width: 20,
              ),
              GestureDetector(
                onTap: () {
                  setState(() {
                    if (isRecording) {
                      stopVideoRecording();
                    }
                    isRecording = false;
                    isTakeVideo = false;
                  });
                },
                child: const Text(
                  "拍照片",
                  style: TextStyle(color: Colors.white, fontSize: 16),
                ),
              ),
              Container(
                width: isTakeVideo ? 0 : 50,
              ),
            ],
          ),
        ),

        ///选择点
        Positioned(
          bottom: 25,
          child: SizedBox(
            width: 16,
            height: 2,
            child: Container(
              decoration: BoxDecoration(
                  color: Colors.white, borderRadius: BorderRadius.circular(1)),
              width: 16,
              height: 2,
            ),
          ),
          // left: 20,
          // right: 20,
        ),

        ///录制进度条
        if (isRecording)
          Positioned(
            top: 20,
            left: 5,
            right: 5,
            child: LinearProgressIndicator(
              value: recordingSeconds / maxRecordingSeconds,
              valueColor:
                  const AlwaysStoppedAnimation(Color.fromRGBO(0, 215, 120, 1)),
              backgroundColor: Colors.white,
            ),
          ),

        ///录制计时点
        if (isRecording)
          Positioned(
            bottom: 150,
            left: 0,
            right: 0,
            child: Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                const Icon(
                  Icons.fiber_manual_record,
                  size: 5,
                  color: Colors.red,
                ),
                Text(
                  " $recordingSeconds S",
                  style: const TextStyle(color: Colors.white, fontSize: 10),
                )
              ],
            ),
          ),
        Positioned(
          top: 25,
          left: 8,
          right: 8,
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Text(
                filter.isNotEmpty ? filter : "滤镜Demo",
                style: const TextStyle(color: Colors.white),
              ),
              TextButton(
                  onPressed: () {
                    for (var element in images) {
                      _saveImg(element);
                    }
                  },
                  child: const Text(
                    "下载所需资源",
                    style: TextStyle(color: Colors.white),
                  )),
            ],
          ),
        ),
      ],
    ));
  }

  /// 录制视频
  Future<void> startVideoRecording() async {
    /// 这里为我统计的录制时长

    if (isRecording) {
      return;

      /// 如果正在录制则无效
    }
    setState(() {
      isRecording = true;
      recordingSeconds = 0;
    });

    startCountdownTimer();
    await cameraFlutterPluginDemo?.takeVideo();
  }

  /// 停止录制
  Future<void> stopVideoRecording() async {
    if (!isRecording) {
      return;
    }
    if (recordingSeconds > 1) {
      setState(() {
        isRecording = false;
      });

      print(
          "=======================================================停止录制$recordingSeconds");
      await cameraFlutterPluginDemo?.stopVideo();
      _timer?.cancel();
    }
  }

  ///  统计的录制时长
  void startCountdownTimer() {
    _timer = Timer.periodic(const Duration(seconds: 1), (time) {
      {
        if (mounted) {
          setState(() {
            //录制时间最多不可以大于widget.maxRecordingSeconds但至少要比bgm长+1是为了去误差
            if (recordingSeconds + 1 == maxRecordingSeconds) {
              _timer?.cancel();
              stopVideoRecording();
            } else {
              recordingSeconds++;
              print(">>>>>>>>>>>>>>>>>>>>>>>>$recordingSeconds=${time.tick}");
            }
          });
        }
      }
    });
  }

  ///拍图片
  takePhoto() async {
    try {
      if (isRecording) {
        stopVideoRecording();
      }
      cameraFlutterPluginDemo?.takePicture().then((value) {
        print("====================>>>>>>>>$value");
        showDialog(
            context: context,
            builder: (context) {
              return GestureDetector(
                child: Image.file(File(value!)),
                onTap: () {
                  Navigator.pop(context);
                },
              );
            });
      });
    } catch (e) {
      print(e);
    }
  }

  ///保存资源文件
  void _saveImg(String name) async {
    if (await Permission.storage.request().isGranted) {
      var response = await Dio().get(
          "https://gitee.com/MaoJiuXianSen/beauty_cam/raw/master/Doc/assets/$name",
          options: Options(responseType: ResponseType.bytes));

      Directory cache = await getApplicationCacheDirectory();
      File image_file = File('${cache.path}/$name');
      if (image_file.existsSync()) {
        print("图片已存在${image_file.path}");
        return;
      }
      //从网络上下载的图片的字节数组写入该文件中。
      image_file.writeAsBytes(response.data);
    }
  }

  ///滤镜选择弹窗
  void _showFilterDialog(BuildContext context) {
    showModalBottomSheet(
      backgroundColor: Colors.transparent,
      context: context,
      builder: (BuildContext context) {
        return Container(
          decoration: BoxDecoration(
              color: Colors.black26, borderRadius: BorderRadius.circular(8)),
          padding: const EdgeInsets.only(top: 15, bottom: 15),
          height: 150,
          child: CupertinoPicker(
              itemExtent: 50, //行高
              onSelectedItemChanged: (index) {
                cameraFlutterPluginDemo?.addFilter(filters[index]);
                setState(() {
                  filter = filters[index];
                });
              },
              children: List<Widget>.generate(filters.length, (int index) {
                return Center(
                  child: Text(
                    filters[index],
                    style: const TextStyle(color: Colors.white),
                  ),
                );
              })),
        );
      },
    );
  }

  ///美颜弹窗
  showBeautyBottomSheet() {
    print("====================>>>>>");
    showModalBottomSheet(
        context: context,
        backgroundColor: Colors.transparent,
        builder: (_) => StatefulBuilder(builder: (BuildContext context,
                void Function(void Function()) setState) {
              return Container(
                decoration: BoxDecoration(
                    color: Colors.black26,
                    borderRadius: BorderRadius.circular(8)),
                padding: const EdgeInsets.only(top: 15, bottom: 15),
                height: 150,
                child: Row(
                  crossAxisAlignment: CrossAxisAlignment.center,
                  children: [
                    Expanded(
                      flex: 2,
                      child: Column(
                        mainAxisSize: MainAxisSize.min,
                        children: [
                          CupertinoSwitch(
                            value: isEnableBeauty,
                            onChanged: (v) {
                              setState(() {
                                isEnableBeauty = v;
                                if (isEnableBeauty) {
                                  level = 1;
                                } else {
                                  level = 0;
                                }
                              });
                              cameraFlutterPluginDemo
                                  ?.enableBeauty(isEnableBeauty);
                            },
                          ),
                          Text(isEnableBeauty ? "开启" : "关闭",
                              style: const TextStyle(color: Colors.white))
                        ],
                      ),
                    ),
                    Expanded(
                      flex: 8,
                      child: Slider(
                        value: level,
                        label: '${(level * 100).toInt()}%',
                        divisions: 100,
                        onChanged: (v) {
                          setState(() {
                            level = v;
                            if (level == 0) {
                              isEnableBeauty = false;
                              cameraFlutterPluginDemo
                                  ?.enableBeauty(isEnableBeauty);
                            } else {
                              isEnableBeauty = true;
                              cameraFlutterPluginDemo
                                  ?.enableBeauty(isEnableBeauty);
                            }
                          });

                          cameraFlutterPluginDemo?.setBeautyLevel(level);
                        },
                        max: 1,
                        min: 0,
                      ),
                    )
                  ],
                ),
              );
            }));
  }

  void onCameraViewCreated(cameraFlutterPluginDemo) {
    this.cameraFlutterPluginDemo = cameraFlutterPluginDemo;
  }
}
